In this article, we explore how to manage disk partitions on AWS EC2 instances. By separating the operating system (OS) from application data into distinct partitions—and, crucially, onto separate EBS volumes—you minimize the risk of data loss if the OS partition becomes corrupted, and you simplify recovery.Documentation Index
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Always ensure you have proper backups before resizing or modifying partitions. Unexpected interruptions can lead to data loss.
Choosing the Right EBS Volume Type
Selecting the appropriate EBS volume type is critical for meeting your performance requirements. AWS offers SSD-backed volumes with varying baseline throughput and IOPS:| Volume Type | Use Case | Baseline IOPS |
|---|---|---|
| gp3 | Balanced cost and performance | Up to 16,000 |
| gp2 | General-purpose workloads | 3 IOPS/GiB |
| io1 | High-performance databases | Up to 64,000 |
| io2 | Mission-critical applications | Up to 64,000 |
gp3 volumes let you provision IOPS and throughput independently, often yielding cost savings for variable workloads.